Project summary

Large parts of northern North America were repeatedly covered by glaciers and ice sheets during the glacial periods of the Pleistocene. While relatively robust information is available on the Last Glacial Maximum (LGM) extents and timing, and on the timing and dynamics of deglaciation from the LGM, there is dearth of information on older glaciations in the early phases of the last glacial cycle and in the glacial cycles of the Middle and Early Pleistocene (Batchelor et al., 2019, Nat. Comms.). This information is critical for better understanding of long-term global climate system and how its extraterrestrial forcing is amplified by complex feedback mechanisms.

This project will attempt to establish the timing of older ice sheet glaciations in northern North America by employing novel methods of quantitative geochronology on some of the sites with identified pre-LGM glacial sediments. We will use the recently developed P-PINI method (Knudsen et al., 2020, EPSL, Nørgaard et al., 2023, Quat. Geochr.) of cosmogenic nuclide burial dating, but where applicable, other applications of cosmogenic nuclide dating or optically stimulated luminescence might also be used. The project will include several seasons of fieldwork in remote regions of northern North America and extensive lab work, part of which will be done at Aarhus University in Denmark.

Candidates with a strong interest in Quaternary science are encouraged to apply. Prior experience with quantitative dating methods, glacial stratigraphy and/or glacial geomorphology is an advantage. Candidates must be able to demonstrate their interest in the research topic, have excellent communication skills, be self-motivated, and be able to work well in a collaborative environment. The position will offer competitive remuneration, allowing for a good standard of living in Prague.

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